Spinning bucket drive



Dec. 7, 1937. F. c. LINN srmume BUCKET DRIVE Filed latch 12, 1936 In vento r Fr ank (3. Linn,

ttorney.

Patented Dec. 7, 1937 srmmo BUCKET pmvn Frank C. Linn, SwampacothMasa', asaignor to General Electric Company, a co New York ration of application March 12, 1936, Serial No. 68,465 2 Claims. (01. 287-53) The present invention relates to drives for spinning buckets, such as for example rayon spinning buckets, and has for its object to provide an improved construction and arrangement in drives of this type.

For a consideration of what I believe to be novel, and my invention, attention is directed tc the following specification and the claims appended thereto.

- In the drawing, Fig 1 is" a vertical sectional view of a construction embodying my invention;

Fig. .2 is a top plan view on an enlarged scale of an adapter which forms a part of the drive.

and Fig. 3 is a developed length of the construction taken on the line 3-.-3. Fig. 2. the distance A in Fig. 3 corresponding to the distance A in Fig. 2. Referring to the drawing. I indicates a vertical driving shaft, which maybe the shaft of an electric, motor, and 2 indicates a rayon spinning 20 bucket of suitable construction driven by the shaft I through an adapter 3. The adapter comprises a metal sleeve which fits over the upper end of shaft I and has driving connection with it as is indicated at I. such driving connection 2 compris n va tapered head 5 on the end of the shaft which fits into a tapered opening at the upper end of the adapter. Tapered end Shas a tight fit in the opening so as to form-a good driving connection. Snaced from the upper end of 30 adapter 3 is a flange 6.

The bucket 2 is provided with a hub I having a bore 8 in which is seated preferably a bushing or liner '9. The bushing or liner is adapted to fit over the upperend of adapter 3. When the 55 bucket is in place on the adapter, thebottom surface of hub I rests agains the top' surface of flange 6.

To effect a driving connection between the bucket'and the adapter and shaft, I provide at the bottom of hub I depending projections III having under-cut beveled surfaces II and in the flange G openings I2 having beveled under-cut portions I3 and I3a at their ends with which the beveled surfaces of the projections it are adapted to engage. The openings I2 are ofa width such that the projections I pass freely into them. The adapter rotates in the direction indicated by the arrow Bin Fig. 2 and to assist in 50 guiding the.pro iections I0 into the openings I2, there are provided curved inclined surfaces I4 which slope downward toward the openings, as

best shown in Fig. 3. With this arrangement, when the bucket is put in position on the adapter, the projections Ill being brought into engagement with the surface of flange 6, the projections quickly and easily find their way to openings I2.

The projections III may be formed advantageously by means of metal pins which are fixed in openings in the hub and have enlarged heads 5 beveled on their under surfaces.

I have shown the projections III as being on the bucket hub and the openings I2 as being in flange 8 but it will be understood that this arrangement may be reversed, the projections be- 10 ing on the flange and the openings in the hub.

With the above described arrangement, when the bucket is in place on the adapter, as is shown in Fig. 1, the pins-provide a driving connection between the bucket and the adapter due to the.

I2, the bucket is held down flrmly on its seat and prevented from vertical movement. The purpose of the under-cut portions "a is to. hold the bucket on its seat when the motor and bucket are being s ipped. When the motor is stopping, the inertia of the bucket overcomes the friction between the bucket and the adapter with the result that there is a movement of the adapter relative to the bucket to bring the projections Ill to the opposite ends of the openings I2. When this occurs, the under-cut surfaces II of projections I0 engage the under-cut surfaces ll'so that while the bucket is being stopped, it is still held from vertical movement. Afterthe bucket is stopped, it may be removed by lifting vertically from the adapter. the'inertla of the rotor and friction of the bearings being so slight as tooifer negligible resistance.

By my invention, I provide a rayon bucket drive which is simple in structure, positive in its action.

and which is capable of being built at low cost. 40

While I have particularly described my invention as being applied to rayon spinning buckets, the invention is not necessarily limited thereto but may be used wherever found applicable. 5

What I claim, as new and desire to secure by Letters Patent of the United States is:

1. In combination, a vertical shaft; a flange on the shaft having openings therein under-cut at their ends, amember to be rotated having a portion which fits over the end of the shaft and engages the flange. and projections on said portion which extend into said openings. said projections being under-cut to engage with the under-cut ends of the openings, and said flange having sloping surfaces for directing the projections into said openings.

2. In a rayon spinning bucket drive, the combination of a vertical shaft, a flange on the shaft 5 spaced from its upper end and having upwardly facing elongated openings therein of substantially uniform width and undercut at their two ends, a rayon spinning bucket hub provided with a bore 

